condition mean min max ZT0-3 239.311062225 234.51339704999998 244.10872740000002 ZT4-7 115.63496631000001 110.69087392 120.57905870000002 ZT8-11 131.50779725 121.1534517 141.86214280000002 ZT12-15 42.93361338 5.0311188604999995 80.83610789949999 ZT16-19 1.61612602725 1.4389493465 1.7933027080000001 ZT20-23 1.27132925875 0.921289296 1.6213692215